LC, you're right Serbia is not particularly strong at the moment. I think the commentators mentioned that most of the team is under 25 and that they are rebuilding though. What I think we can take from that game is the Boomers should not fear Serbia.
If the Boomers have the self belief to make their shots and play to their ability, they will beat teams like Serbia and even Argentina methinks. (Argentina obviously have great guard play, but they are undersized up front and can be exploited there. On the other side of the ledger, I think we finally have enough athleticism in the backcourt to at least cope with players like Ginobili and Delfino.)
Me, I agree with you that the Iranians poor guards limit the effectiveness of their centre. I wrote in another thread that if their guards had turned the ball over a few less times against the Argies, they would have beaten them too! One thing I disagree with though is your comment about Ehadadi's mid-range shooting. I have seen him make several shots from mid-range, including one late in the game against Serbia to seal it, with someone right in his face!